May 10th, 2014 by Ric Hanson

SEVERE THUNDERSTORM WATCH 137 IS IN EFFECT UNTIL 10:00 PM CDT FOR THE FOLLOWING LOCATIONS…. IOWA COUNTIES INCLUDED ARE

ADAMS DECATUR FREMONT MILLS MONTGOMERY PAGE RINGGOLD TAYLOR UNION

PRIMARY THREATS INCLUDE SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS TO 3 INCHES IN DIAMETER POSSIBLE ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE A TORNADO OR TWO POSSIBLE.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES SOUTH OF CHANUTE KANSAS TO 40 MILES EAST NORTHEAST OF SHENANDOAH IOWA.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

REMEMBER…A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES.

May 10th, 2014 by Ric Hanson

Meteorologists are warning residents of the Midwest to stay pay close attention to the forecast for Mother’s Day. The Severe Storms Prediction Center in Norman, OK., says a severe weather outbreak with many tornadoes and very large hail is possible Sunday and Sunday night across parts of the central plains and mid-Missouri valley. Persons celebrating with loved ones and those attending graduations should be aware of a potentially explosive outbreak of severe weather. Much if Iowa, especially southwest and west central parts of the state, fall under the “Moderate” risk category.

Officials with the Iowa Storm Chasing Network say “Of particular concern here in Iowa is the conditions which will favor the development of a few, independent supercells, rather than a more linear bowing structure of storms. This setup gives us concern that not only are tornadoes possible, but strong, long-track tornadoes as well.”

May 10th, 2014 by Ric Hanson

TODAY AND TONIGHT:
A SLIGHT RISK OF SEVERE THUNDERSTORMS IS FORECAST OVER SOUTHERN IOWA…GENERALLY ALONG AND SOUTH OF HIGHWAY 34…THIS AFTERNOON AND EVENING. LARGE HAIL AND DAMAGING WINDS ARE THE MAIN THREAT. ISOLATED STRONG TO POTENTIALLY SEVERE THUNDERSTORMS LOOK POSSIBLE NORTH OF HIGHWAY 34…WHERE HAIL AND WINDS REMAIN A THREAT.

SUNDAY:
THE PROBABILITY FOR WIDESPREAD SEVERE THUNDERSTORMS IS INCREASING SUNDAY INTO SUNDAY EVENING. LARGE HAIL AND ISOLATED TORNADOES WILL BE POSSIBLE OVER MUCH OF CENTRAL IOWA. HEAVY RAIN IS ALSO ANTICIPATED SUNDAY AFTERNOON THROUGH MONDAY AND MAY LEAD TO LOCALIZED AREAS OF FLASH FLOODING.

SPOTTER INFORMATION STATEMENT…
SPOTTER ACTIVATION IS POSSIBLE THIS AFTERNOON AND EVENING…AND WILL LIKELY BE NEEDED SUNDAY INTO SUNDAY NIGHT…AND AGAIN ON MONDAY.

May 10th, 2014 by Ric Hanson

TODAY AND TONIGHT:
ISOLATED THUNDERSTORMS WILL BE POSSIBLE TODAY…MAINLY LATER THIS
MORNING AND AFTERNOON. WHILE STORMS WOULD REMAIN BELOW SEVERE
LEVELS THIS MORNING…THERE IS A SLIGHT RISK OF SEVERE STORMS
ACROSS SOUTHWESTERN IOWA THIS AFTERNOON SOUTH OF INTERSTATE 80.

AFTER A BREAK THIS EVENING…ADDITIONAL THUNDERSTORMS ARE EXPECTED
TO DEVELOP AFTER MIDNIGHT IN SOUTHEAST NEBRASKA…SPREADING NORTH
ACROSS THE AREA THROUGH DAYBREAK. SOME OF THESE STORMS COULD BE
STRONG TO SEVERE WITH LARGE HAIL THE PRIMARY HAZARD ACROSS SOUTHEAST
NEBRASKA AND SOUTHWEST IOWA…ALONG AND SOUTH OF INTERSTATE 80.

SUNDAY …
SCATTERED STRONG THUNDERSTORMS MAY BE ONGOING SUNDAY MORNING
ACROSS SOUTHEAST NEBRASKA AND SOUTHWEST IOWA WITH LARGE HAIL
POSSIBLE…AS A WARM FRONT LIFTS NORTH INTO THE REGION. ADDITIONAL
STRONG TO SEVERE STORMS ARE EXPECTED TO DEVELOP ALONG THE FRONT
DURING THE AFTERNOON…DEVELOPING INTO A SQUALL LINE SUNDAY
EVENING THEN MOVING EAST AND OUT OF THE AREA AFTER MIDNIGHT.

SEVERE STORMS WITH ALL MODES OF SEVERE WEATHER WILL BE POSSIBLE
ALONG THE FRONT…GENERALLY ALONG AND SOUTHEAST OF A LINE FROM
ABOUT COLUMBUS NEBRASKA TO ONAWA IOWA. THIS WOULD INCLUDE SUPERCELL
STORMS WITH VERY LARGE HAIL…DAMAGING WINDS AND ISOLATED TORNADOES.
LOCALLY HEAVY RAINFALL WILL ALSO ACCOMPANY THE THUNDERSTORMS AS
THEY PUSH THROUGH THE REGION LATE SUNDAY AFTERNOON AND EVENING.

.SPOTTER INFORMATION STATEMENT…

SPOTTER ACTIVATION SHOULD NOT BE NEEDED TODAY OR TONIGHT…BUT
COULD BE NEEDED SUNDAY IN SOUTHEAST NEBRASKA AND SOUTHWEST IOWA.

May 9th, 2014 by Ric Hanson

EARLY THIS MORNING…MOSTLY CLOUDY. BREEZY. MUCH COLDER. NORTHWEST WIND 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.

TODAY…PARTLY SUNNY UNTIL LATE AFTERNOON THEN CLEARING. COOLER. HIGH IN THE MID 60S. WEST WIND 10 TO 15 MPH.

TONIGHT…PARTLY CLOUDY. LOW AROUND 50. SOUTHWEST WIND 5 TO 10 MPH SHIFTING TO THE SOUTH AFTER MIDNIGHT.

SATURDAY…PARTLY SUNNY. A CHANCE OF LIGHT SHOWERS AND ISOLATED THUNDERSTORMS IN THE MORNING…THEN A CHANCE OF THUNDERSTORMS IN THE AFTERNOON. WARMER. HIGH IN THE UPPER 70S. SOUTH WIND 5 TO 15 MPH WITH GUSTS TO AROUND 25 MPH. CHANCE OF PRECIPITATION 30 PERCENT.

SATURDAY NIGHT…PARTLY CLOUDY THROUGH MIDNIGHT THEN BECOMING MOSTLY CLOUDY. A 20 PERCENT CHANCE OF THUNDERSTORMS. LOW IN THE MID 50S. WEST WIND 5 TO 10 MPH SHIFTING TO THE NORTH AFTER MIDNIGHT.

SUNDAY…MOSTLY CLOUDY WITH A 50 PERCENT CHANCE OF THUNDERSTORMS. HIGH IN THE UPPER 60S. NORTHEAST WIND 5 TO 15 MPH.